Physics
Time of exposure required for taking photograph of an object depends upon the

Skill of photographer
Proximity of object
Brightness of the object
Size of the object

ANSWER DOWNLOAD EXAMIANS APP

Physics
A photon of X-ray has energy of 1 keV. A photon of visible radiation has energy of 3 eV. In this context, which one of the following statements is not correct?

The frequency of X-ray photon is higher than the frequency of visible radiation photon.
The speeds of both the photons in vacuum are different
The wavelength of X-ray photon is less than the wavelength of visible radiation photon.
Both the photons have different energies.

ANSWER DOWNLOAD EXAMIANS APP

Physics
Ice is packed in saw dust because

Saw dust does not stick to the ice.
Saw dust is a good conductor of heat.
Saw dust is poor conductor of heat.
Saw dust will not get melted easily.

ANSWER DOWNLOAD EXAMIANS APP